The digitization of voter registration is increasingly adopted as a strategy to improve transparency, reduce fraud, and enhance electoral participation. In Nigeria, the Independent National Electoral Commission (INEC) introduced the e-voter registration system to overcome challenges associated with manual processes. However, the extent to which citizens perceive the system as useful and easy to use depends on both system-related and human factors. Guided by the Technology Acceptance Model (TAM), this study investigates the influence of system quality and officer quality on citizens’ perceived usefulness and perceived ease of use of the e-voter registration system. Data were collected from 400 eligible voters across six Nigerian states using a structured questionnaire. Structural Equation Modeling (SEM) with AMOS was employed to test the hypothesized relationships. Findings revealed that system quality significantly and positively influences both perceived usefulness (β = 0.43, p < 0.001) and perceived ease of use (β = 0.38, p < 0.001). Officer quality also exhibited significant positive effects on perceived usefulness (β = 0.41, p < 0.001) and perceived ease of use (β = 0.36, p < 0.001). The model explained 38% of the variance in perceived usefulness (R² = 0.38) and 34% in perceived ease of use (R² = 0.34). The study emphasizes the dual importance of robust system design and competent electoral officers in enhancing citizens’ acceptance of e-voter registration systems. Policy implications include continuous system upgrades, targeted officer training, and citizen-centered system design to strengthen electoral credibility.